51768872 has 16 divisors (see below), whose sum is σ = 97486740. Its totient is φ = 25772416.

The previous prime is 51768841. The next prime is 51768881. The reversal of 51768872 is 27886715.

51768872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 417316 = 7166^2 + 646^2 .

It is a super-2 number, since 2×51768872² = 5360032216304768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12023 + ... + 15750.

Almost surely, 2^51768872 is an apocalyptic number.

It is an amenable number.

51768872 is a deficient number, since it is larger than the sum of its proper divisors (45717868).

51768872 is a wasteful number, since it uses less digits than its factorization.

51768872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28012 (or 28008 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 51768872 is about 7195.0588600789. The cubic root of 51768872 is about 372.6972893012.

The spelling of 51768872 in words is "fifty-one million, seven hundred sixty-eight thousand, eight hundred seventy-two".